Implement a warning for mixing bitwise logical with comparison ops. Fixes PR5297.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85117 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/parentheses.c b/test/Sema/parentheses.c
new file mode 100644
index 0000000..360aade
--- /dev/null
+++ b/test/Sema/parentheses.c
@@ -0,0 +1,19 @@
+// RUN: clang-cc -Wparentheses -fsyntax-only -verify %s
+
+// Test the various warnings under -Wparentheses
+void if_assign(void) {
+ int i;
+ if (i = 4) {} // expected-warning {{assignment as a condition}}
+ if ((i = 4)) {}
+}
+
+void bitwise_rel(unsigned i) {
+ (void)(i & 0x2 == 0); // expected-warning {{& has lower precedence than ==}}
+ (void)(0 == i & 0x2); // expected-warning {{& has lower precedence than ==}}
+ (void)(i & 0xff < 30); // expected-warning {{& has lower precedence than <}}
+ (void)((i & 0x2) == 0);
+ (void)(i & (0x2 == 0));
+ // Eager logical op
+ (void)(i == 1 | i == 2 | i == 3);
+ (void)(i != 1 & i != 2 & i != 3);
+}